One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,6,7,8)(9,10,13,15)(11,16,12,14)(17,18,22,26)(19,23,24,32)(20,28,30,27)(21,31,29,25)(2,5)(6,8)(9,11,13,12)(10,14,15,16)(17,19,22,24)(18,23,26,32)(20,25,30,31)(21,27,29,28)(11,12)(14,16)(17,20,29,32,22,30,21,23)(18,24,31,27,26,19,25,28)(1,3,4,7)(2,6,5,8)(9,12,13,11)(10,14,15,16)(11,12)(14,16)(19,24)(20,30)(23,32)(27,28) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.